The patch titled
cpusets: update mems allowed in page allocator
has been removed from the -mm tree. Its filename was
cpusets-update-mems-allowed-in-page-allocator.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: cpusets: update mems allowed in page allocator
From: David Rientjes <rientjes@xxxxxxxxxx>
If all allowable memory is unreclaimable, it is possible to loop forever
in the page allocator for ~__GFP_NORETRY allocations.
During this time, it is also possible for a task's cpuset to expand its
set of allowable nodes so that it now includes free memory. The cached
copy of this set, current->mems_allowed, is stale, however, since there
has not been a subsequent call to cpuset_update_task_memory_state().
The cached copy of the set of allowable nodes is now updated in the page
allocator's slow path so the additional memory is available to
get_page_from_freelist().
[akpm@xxxxxxxxxxxxxxxxxxxx: add comment]
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Paul Menage <menage@xxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN mm/page_alloc.c~cpusets-update-mems-allowed-in-page-allocator mm/page_alloc.c
--- a/mm/page_alloc.c~cpusets-update-mems-allowed-in-page-allocator
+++ a/mm/page_alloc.c
@@ -1561,6 +1561,10 @@ nofail_alloc:
/* We now go into synchronous reclaim */
cpuset_memory_pressure_bump();
+ /*
+ * The task's cpuset might have expanded its set of allowable nodes
+ */
+ cpuset_update_task_memory_state();
p->flags |= PF_MEMALLOC;
reclaim_state.reclaimed_slab = 0;
p->reclaim_state = &reclaim_state;
_
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
origin.patch
cpuset-update-top-cpusets-mems-after-adding-a-node.patch
oom-fix-zone_scan_mutex-name.patch
oom-print-triggering-tasks-cpuset-and-mems-allowed.patch
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